Means for closing steam or other pressure chambers.



No. 720,155. l l Y j Y PATENTEDEEB. 1Q, 1903.l

E. KIRGEIS. MEANS FOR CLOS-ING STEAM 0R OTHER PRESSURE CHAMBERS.'

APPLICATION FILED MAY 15, 1902.

N0 MODEL.

UNITED' STATES PATENT OFFICE.,

PAUL KIRGEIS, oF BRESLAU, GERMANY.

MEANS FOR CLOSING STEAM OR OTHER PRESSURE CHAMBERS.

SPECIFICATION forming part of Letters Patent No. 720,155, dated February 10, 1903. Application filed May l5, 1902. Serial No. 107,461. (No model.)

To all whom t may concern: I

I of the German Emperor, residing and having my post-oftice address at Mathiasstrasse 170, Breslau, in the Empire of Germany, have invented certain new and useful Improvements in Means for Closing Steam or other Pressurer Chambers, of which the followingisaspeciiication.

This invention relates to improvements in means for closing steam and other pressure chambers.

For closing the ends of steam and other pressure chambers cover-plates have hitherto been used, which were xed externally to iianges on the chambers by means of bolts ory studs. One disadvantage of this method is that the screwing of the bolts occupies a considerable amount of time. The bolts also require to be frequently replaced, as they rapidly wear out. Further, it is difficult to render the covers perfectly steam-tight by the means described,for the reason that the steam presses the cover outward, s'o that the latter is lifted away from the packing in places, even when screwed down very carefully.

The object of the present invention is to close steam-chambers in such a manner that, as with manhole-covers, thecovers of the chambers are pressed by the steam inside againilainges, so that thegr'eater the steampressure becomes the more tightly the covers fit. To effect this, a slot is provided in the wall of the chamber,througl1 which slot a slide is inserted. The latter is so constructed that when pressed against its seat it closes the slot.

In the annexed drawings, Figure lis a vertical section of a steam-chamber with the slide inserted; Fig. 2 an end view, and Fig. 3 aside View.

The steam-chamber is closed by means of the slide a, passingl through a slot g in they chamber, and the lower part of which fits against the inner wall of the chamber and is provided with a rib b, which enters a recess formed by the wall of the Achamber and a ring c of rectangular cross-section. This recess is iilled with packing material. One side of the upper external portion of the slide is provided with a rib d, fitting the shape of the steamchamber. y The other side has a semicircular projection e, which also fits the shape of the steam-chamber. The rib d and projection e enter recesses in a collar f, riveted or4 otherwise attached to that part of the chamber in which the slot gis provided. A slot in the said collar coincides with the slot g in order to afford passagefor the slide, and the recesses referred to contain packing. The width of the slots in the collar and chamber is just sufcient to allow the slide and its ribs b and d to pass through freely. The projection eis so shaped that when the slide passes through the slots the said projection extends over and behind the collarf. When the slide has been inserted and is pulled forward by some known device, it closes the end of the chamber tightly as soon as the rib h enters the packing material provided for it,and at the same time the slot g is closed, since the forward movement of the slide causes the rib d and the projection e to enter the packing material which is provided for them in their respective recesses. The steam-pressure forces the cover so tightly against its seat that leakage of steam is impossible,since every increase of pressure increases the tightnessof the cover.

I declare that what l claim is- 1. The combination with a pressure-chamber of a slide passing through a slot in the wall'thereof, and adapted to 'close the open end of said chamber, said slide also closing said slotby means of a rib on one side and a projection on the other side, both adapted to enter recesses in a collar attached to the ontside ofthe chamber, andpacking material in said recesses, substantially as described.

2. The combination with a pressure-chamber of a slide passing through a slot in the wall thereof, a rib on said slide adapted to enter a recess formed inside the chamber, a rib and a projection on opposite sides of the 'external part of said slide both adapted to enter recesses in a collar attached to the outside of the chamber for the purpose of closing the slot on the slide being seated and IOC said slide, and a semieircuiar projection on In Witness whereof I have signed this specithe other side of the external part of said slide, fication in the presence of two witnesses. both adapted to enter recesses in a slotted 1 collar attached no the outside of the chamber, PAUL KIRGLI' 5 for the purpose of closing the slot; when the Witnesses:

slide is seated and packing material in the HERMANN MENS, several recesses substantially as described. EDMUND MENS. 

